Jacketboard



June 1957 H. D. STRAZZERI 2,795,243

JACKETBOARD Filed May 13, 1955 JTTORNEYS United States Patent C JACKETBOARD Harold D. Strazzeri, Albany, N. Y., assignor to Albany geltkCompany, Albany, N. Y., a corporation of New Application May 13, 1955, Serial No. 508,150

Claims. (Cl. 139-491) My invention relates to the art of weaving and particularly to improvements in jacketboards which are used in the weaving of endless or tubular materials for holding the fabric out to its proper width.

A jacketboard of the type now in use consists of a straight, elongated section having a head at each end thereof and which is placed between the layers of the fabric being woven. Its position in the fabric and its movement are controlled from four points. At the front, there are two tails of yarn or string which are tied to the board and then inserted between the layers of the fabric and allowed to weave forward with the fabric, thereby exerting a forward pull on the board. To keep the board from moving forwardly with the fabric and to counterbalance the pull of the tails, two other connections, usually consisting of catgut, fine wire or even cord, run from the jacketboard back through the reed, through the eyes of the heddles and are connected with springs which are mounted on the frame of the loom. It is necessary that the length of the front tails be such that, in operation, just enough forward pull is exerted on the board to keep it in position but not so much as to extend the springs. This length must be determined by trial and error and often requires considerable time.

In addition to the foregoing, one of the objections to the conventional jacketboard is that, if a very fine reed is being used, it is impossible, without cutting the reed, to get a wire large enough therethrough to hold the board.

The principal object of my invention is to provide a jacketboard and means for holding it in the proper position and controlling the movements thereof without the conventional connections.

I accomplish this end by the means described below and illustrated in the accompanying drawing in which- Fig. l is a plan view of my device showing the parts of the loom which are immediately associated therewith;

Fig. 2 is a top plan view of the board;

Fig. 3 is a plan view of the back edge of the board;

Fig. 4 is a section of Fig. 1 in the plane 4-4 drawn to a somewhat enlarged size;

Fig. 5 is a fragmentary, enlarged side or end elevation of the means for controlling the position and movements of the board;

Fig. 6 is a section of Fig. 5 in the plane 6-6; and

Fig. 7 is a fragmentary, plan view of the plate to which the magnets are secured.

Referring first to Figs. 1 and 4, 1 is the race plate of the loom, 2 is the breast beam and 3 is the take-up roll. 4 is the jacketboard which is shown to an enlarged scale in Figs. 2 and 3, and comprises an elongated central portion 5 having head pieces 6 and 7 at the ends thereof. The head pieces are secured to the portion 5 by means of hinges 8 so that they may swing towards and away from the member 5. The hinges are secured to the member 5 by means of bolts 9 which pass through slotted openings 10 in one leg of the hinge so that the overall length of the board may be varied. The extent to which the heads 2,795,243 Patented 'June 11, 1957 2 6 and 7 may swing away from the member 5 may be varied by means of the bolts 11 which pass through slotted openings 12 in the heads, and the heads are urged away from the member 5 by means of the springs 13. Embedded in the top of the member 5 is a plate 14 of magnetic metal.

Adjustably secured to the breast beam 2 by means of angles 15, is a bar 16 extending transversely of the loom and hingedly secured thereto, at 17, is a plate 18. Secured to the top of the plate is a plurality of magnets 19. These magnets are secured to the plate by means of the strips 20 which are secured to the plate 18 by the struckout portions 21 thereof and which overlie the portions 22 of the magnets. The portions of the plate 18, below the poles of the magnets, are cut out as shown at 23 in Fig. 7.

In operation, the jacketboard, which is positioned within the tubualr fabric 24 (see Fig. 4), is held in place by magnetic attraction between one of the poles of the magnets 19 and the plate 14 embedded in the jacketboard, thus eliminating the conventional connections. As the lay moves forward, the reeds 25 push the pick into the fabric and gently hit the jacketboard, pushing it forward and somewhat out of the position. that it would freely assume with respect to the poles of the magnets. As the lay moves back, the magnets pull the jacketboard backwards into its proper position and the board is kept from going back far enough to hit the shuttle by the pull of the magnets. The board may be easily adjusted to its proper position by reason of the slotted openings 26 and 27 (see Figs. 1 and 4) in the angles by means of which the bar 16 is secured to the breast beam of the m.

The top layer of the fabric passes between the magnet and the jacketboard and, with some fabrics, it is necessary to put a non-magnetic spacer between the fabric and the magnets to reduce the attraction of the magnets for the plate 14 in the jacketboard, and thus allow the fabric to pull forward between the jacketboard and the magnets without damage thereto. This spacer may be secured to the under side of the plate 18.

While I have described my invention in its preferred embodiment, it is to be understood that the words which I have used are words of description rather than of limitation and that changes, within the purview of the appended claims, may be made without departing from the true scope and spirit of my invention in its broader aspects.

What I claim is:

1. In a loom; the combination with a jacketboard; of a magnet cooperating therewith controlling the position and movements of said board.

2. In a loom; the combination with a jacketboard having a plate of magnetic metal embedded therein and extending longitudinally thereof; of a plurality of magnets cooperating with said plate for controlling the position and movements of said board.

3. In a loom; the combination with a jacketboard having a plate of magnetic metal embedded in the top thereof and extending longitudinally thereof; of a plurality of magnets cooperating with said plate for controlling the position and movements of said board; and means hingedly connecting said magnets to said loom to swing about a horizontal axis.

4. A jacketboard for a loorn comprising an elongated member having a plate of magnetic metal embedded in the upper side thereof; whereby the position and movements of said board when installed in a loom may be controlled by magnets cooperating with said plate; head members on said elongated member; means hingedly securing said head members to said elongated member; and adjustable means for limiting the extent to which said head members can swing away from said elongated member.

;5. InraloQm having a breast beam and a race plate; the iszcrnbinatiqn with a ja lsetb a d hav ng a Pl e of magnetic metal embedded in the upper side and extending longitudinally thereof; of a plurality of magnets cooperating with said plate for controlling thetpyosition and movemer ts of sa id board; and means hingedly connecting said magnets to aid beam; said connec ing me ns being ad- 4 justable to vary the elevation of said magnets, and the distance of said board from said race plate.

References Cited in the file of this patent UNITED STATES PATENTS 2,517,021 Parker Aug. 1, 1950 

